Combine milk, unsalted butter, and sugar in a medium saucepan.
Place over low heat and stir until sugar dissolves and butter melts.
Remove from heat, pour into a large bowl, and allow to cool.
Once cool, stir in yeast and 4 cups of flour.
Cover and allow to rise at room temperature for 1-2 hours, until dough swells noticeably.
Stir in baking soda, baking powder, and salt.
Stir in the rest of the flour 2 cups at a time until a soft dough forms.
Place dough into a large ungreased lidded container.
Refrigerate overnight.
The next day, melt salted butter over low heat and transfer to a small bowl.
Spray baking pans with cooking spray.
Roll dough out on a heavily floured surface.
Cut out rounds using a 3-inch cutter.
Dip rounds, one at a time, into melted butter, fold in half and place in prepared pan.
Allow to rise in a warm place 1 hour or until doubled in bulk.
While rolls are rising, heat oven to 375℉/190℃.
Bake rolls until golden brown, about 15-20 minutes.
Serve hot.